Add long-missing copyright.
Add long-missing copyright.

virneo/relex,williampma/relex,ainishdave/relex,rodsol/relex-temp,leungmanhin/relex,AmeBel/relex,williampma/relex,linas/relex,opencog/relex,ainishdave/relex,opencog/relex,linas/relex,virneo/relex,virneo/relex,williampma/relex,rodsol/relex-temp,virneo/relex,anitzkin/relex,rodsol/relex-temp,rodsol/relex,rodsol/relex,anitzkin/relex,AmeBel/relex,anitzkin/relex,opencog/relex,anitzkin/relex,leungmanhin/relex,ainishdave/relex,rodsol/relex-temp,AmeBel/relex,ainishdave/relex,anitzkin/relex,rodsol/relex,rodsol/relex-temp,rodsol/relex,williampma/relex,leungmanhin/relex,linas/relex